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“The Billboard charts are the ultimate measure of success in music, and they need to constantly evolve as the very definition of what it means to have a hit continues to change,” says Bill Werde, Billboard’s editorial director. “When the charts launched over 70 years ago, a hit was defined as selling copies of a single or generating airplay. While those avenues are still viable, one needn’t look any further than Cee Lo, Gotye, PSY or now Baauer to know that a song can be a massive hit on YouTube alone.”

The most notable YouTube-influenced title this week is viral sensation “Harlem Shake” by producer Baauer, which debuts at No. 1 on both the Hot 100 and Streaming Songs charts and jumps 12-1 on Dance/Electronic Songs with 103 million views, according to YouTube. According to Nielsen, the “Harlem Shake” arrival also benefits from viral video-influenced sales of 262,000 downloads. That sales sum alone, good for a No. 3 ranking on Hot Digital Songs, would have placed within the top 15 on the Hot 100 without the inclusion of YouTube streams into the calculation.